/*******************************************************************************
 * Copyright 2005-2006, CHISEL Group, University of Victoria, Victoria, BC,
 *                      Canada.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors: The Chisel Group, University of Victoria
 *******************************************************************************/
package org.eclipse.zest.core.viewers;

import org.eclipse.jface.viewers.IStructuredContentProvider;

/**
 * A content provider that is node-relationship centric. Call-backs return model
 * nodes to the user, and ask for relationships. Both nodes and relationships
 * are represented by the user's model.
 *
 * @author Del Myers
 *
 */
//@tag bug.154580-Content.fix : new content provider that returns relationships for the given source and destination.
public interface IGraphEntityRelationshipContentProvider extends IStructuredContentProvider {
	/**
	 * Gets the relationships between the given source and destination nodes.
	 *
	 * @param source the source node.
	 * @param dest   the destination node.
	 * @return objects represtenting the different relationships between the nodes.
	 */
	public Object[] getRelationships(Object source, Object dest);

}
